toSelect fails when using custom Page instance

[Swatinem]

🐛 Bug Report

When using a custom Page instance, for example using browser.newPage(), the toSelect matcher fails with the following Error:
JSHandles can be evaluated only in the context they were created!

To Reproduce

NOTE: I haven’t run this inside a reduced testcase, but my testsuite runs correctly when not using browser.newPage().

// fails:
const p = await browser.newPage()
// works:
// const p = page
await expect(p).toSelect('select[name="fontFamily"]', font)

Expected behavior

This should work no matter which page instance it is run on.

Link to repl or repo (highly encouraged)

Please provide a minimal repository on GitHub.

Issues without a reproduction link are likely to stall.

Run npx envinfo --system --binaries --npmPackages expect-puppeteer,jest-dev-server,jest-environment-puppeteer,jest-puppeteer,spawnd --markdown --clipboard

Paste the results here:

• node@10.15.3
• jest-puppeteer@4.3.0
• expect-puppeteer@4.3.0

[Mavrin]

Look like I fix it #275